Towered · Class D surface area
Sierra Vista Municipal-Libby Aaf (KFHU) radio calls
Fort Huachuca Sierra Vista, AZICAO KFHU · FAA FHU
Sierra Vista Municipal-Libby Aaf is a towered airport in Fort Huachuca Sierra Vista, AZ. You will taxi with Ground on 121.7 and work Libby Tower on 124.95, after listening to the ATIS on 134.75. The approach control is Libby Aaf Gca Approach on 127.05, which is who you call for VFR flight following. The tower operates 0600Z MON-0600Z SAT; EXCP HOL, OTHER TIMES BY NOTAM. local.
The airport has a Class D surface area: two-way radio communication with the tower must be established before entering. Published hours: CLASS D SVC MON 0600-SAT 0600Z EXC HOL, OTHER TIMES BY NOTAM; OTHER TIMES CLASS G..
Frequencies
| ATIS | 134.75 |
|---|---|
| GroundLibby Ground | 121.7 |
| TowerLibby Tower | 124.95 |
| CTAF | 124.95 |
| UNICOM | 122.95 |
| Approach / DepartureLibby Aaf Gca Approach | 127.05 |
Airport
- Runways
- 03 · 21 · 08 · 26 · 12 · 30
- Right-hand pattern
- Runway 21, 26, 30
- Elevation
- 4,719 ft
- Tower hours
- 0600Z MON-0600Z SAT; EXCP HOL, OTHER TIMES BY NOTAM. local
- Position
- 31.588, -110.344
Towered airport with a Class D surface area
Sample calls at KFHU
Sierra Vista Municipal-Libby Aaf has a Class D surface area: establish two-way communication with the tower before entering (AIM 3-2-5 b 3). A reply that uses your call sign, even "standby", establishes it; "aircraft calling, standby" does not. The calls below use runway 03; the tower assigns the runway in use on the day.
The aircraft is the AIM’s own example, Cessna Three One Six Zero Foxtrot; the squawk codes, altitudes and headings are illustrative. Frequencies, station names and runway numbers are this airport’s, from the FAA data.
- Listen to the ATIS on 134.75 first and note the letter; "with Information (letter)" on your first call lets the controller skip the weather (JO 7110.65 3-10-1).
- YouLibby Ground, Cessna Three One Six Zero Foxtrot, at the ramp with Information Alpha, request taxi, VFR departure to the north.
- ATCCessna Six Zero Foxtrot, Libby Ground, runway zero three, taxi via Alpha, hold short of runway zero three.
- YouRunway zero three, taxi via Alpha, hold short of runway zero three, Cessna Six Zero Foxtrot.
- The runway, any clearance onto a runway and every hold-short instruction are read back (AIM 4-3-18 a 9). Stay on Ground through the run-up and switch to Tower when ready (AIM 4-3-14 a).
- YouLibby Tower, Cessna Six Zero Foxtrot, holding short runway zero three, ready for departure, northbound.
- ATCCessna Six Zero Foxtrot, Libby Tower, runway zero three, cleared for takeoff.
- YouRunway zero three, cleared for takeoff, Cessna Six Zero Foxtrot.
- ATCCessna Six Zero Foxtrot, contact Libby Aaf Gca Approach one two seven point zero five.
- Youone two seven point zero five, Cessna Six Zero Foxtrot.
- YouLibby Aaf Gca Approach, Cessna Three One Six Zero Foxtrot, two thousand climbing four thousand five hundred, request VFR flight following to the north.
- ATCCessna Six Zero Foxtrot, Libby Aaf Gca Approach, radar contact, altimeter three zero zero one.
- YouAltimeter three zero zero one, Cessna Six Zero Foxtrot.
- Inbound: call the tower about 15 miles out, before the Class D boundary (AIM 4-3-2 a).
- YouLibby Tower, Cessna Three One Six Zero Foxtrot, one five miles north, three thousand, with Information Bravo, landing Libby.
- ATCCessna Six Zero Foxtrot, Libby Tower, enter left downwind runway zero three, report midfield downwind.
- YouEnter left downwind runway zero three, report midfield, Cessna Six Zero Foxtrot.
- YouLibby Tower, Cessna Six Zero Foxtrot, midfield left downwind, runway zero three.
- ATCCessna Six Zero Foxtrot, runway zero three, cleared to land, wind two seven zero at eight.
- YouRunway zero three, cleared to land, Cessna Six Zero Foxtrot.
- The wind is information: acknowledged, not read back. Exit at the first available taxiway or as told, taxi clear of the hold-short markings, and change to Ground only when the tower says (AIM 4-3-21).
- ATCCessna Six Zero Foxtrot, exit at the next taxiway, contact Libby Ground one two one point seven.
- YouExit next taxiway, one two one point seven, Cessna Six Zero Foxtrot.
- YouLibby Ground, Cessna Six Zero Foxtrot, clear of runway zero three, taxi to the ramp.
If things change. The tower operates 0600Z MON-0600Z SAT; EXCP HOL, OTHER TIMES BY NOTAM. local. Outside those hours the airport is a non-towered field: self-announce on the CTAF, 124.95 with the airport name first and last, and the surface area reverts to Class E or Class G as published in the Chart Supplement.
Phraseology from AIM 4-2-3; 4-3-18 a 9; 4-3-14; 4-3-21; 4-4-7 b; 4-1-18 a 3; 3-2-5 b 3; 4-3-2 a. What TowerTalk grades against →
The calls you will make here
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Frequencies, runways and airspace from the FAA National Airspace System Resources (NASR) 28-day subscription, cycle effective Sep 3, 2026. Training use only. Always verify against a current Chart Supplement and sectional chart before flight; frequencies change. TowerTalk is not affiliated with the FAA. Report a discrepancy.
